Alloy.



ED STATES PATENT OFFICE.

EDWARD D. GLEASON, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO

NEU-METALS AND PROCESS COMPANY, OF LONG ISLAND CITY, NEW YORK, A CO PORATION OF NEW YORK.

Patented Apr. 14, 1914.

ALLOY.

1 ,093,557. Specification of Letters Patent.

No Drawing.

To all whom. it may concern Be it known that I, E WARD D. Gnnason, a citizen of the United States, residing in Brooklyn, in the county of Kings, city and State of New York, have invented a certain new and useful Improvement in Alloys, whereof the following is a specification. v It is the ultimate object of my invention to provide boiler and condenser tubes of homogeneous metal capable of resisting corrosion, but my improved alloy is not only capable of resisting the corrosive action of water and steam but is also capable of resisting the action of sulfuric and nitric acids and other corrosive liquids, and consequently may be employed for other structures than such tubes. Said alloy is about the color of platinum and has a coefficient of expansion, by heat, approximatelyv that of glass. I find that the useful properties aforesaid are characteristic of alloys Within the following range of proportions by weight Iron 80 to 120 parts Nickel l 80 to 120 parts Copper 1 part Aluminum 4 parts.

-I find it preferable to employ Swedish iron in making such alloys and a typicalexample, having the useful properties above stated, is as follows Swedish iron 110 parts Nickel 90 parts Copper l lpart Aluminum lparts.

It is to'be noted that ordinary alloys including iron-nickel-copper are objectionable in that casting and cooling the same usually Application filed February 18, 1913. Serial No. 749,109.

results in separation of said metals and formation of hard nodules throughout the mass of the alloy. Consequently, it has been the practice hitherto to include in such alloys manganese, magnesium, or some other deing agents aforesaid, and Without regard to carbon and are not only homogeneous but are so ductile that they may be readily rolled-to sheet or drawn to tube and wire forms.

Alloys in accordance with my invention do not require any special method or means of manufacture, and ordinary methods and means may be employed.

I do not desire to limit myself to the precise proportions herein set forth as it is obvious that various modifications may be made therein without departingfrom the essential features of my invention as defined in the appended claims.

I claim 1. An alloy comprising iron 80 to 120 parts, nickel 80 to 120 parts, copper 1 part and aluminum 4 parts. a

.2. An alloy comprising Swedish iron 110 parts, nickel 90 parts, copper 1- part, and aluminum at parts. 7 In testimony whereof, I have hereunto signed my name at Philadelphia, Pa., this 17th day of February, 1913.

' EDWARD D. GLEASON.

Witnesses:

ARTHUR E. PAIGE, ANNA ISRAELVITZ. 

